Title :
Average SNR of a generalized diversity selection combining scheme
Author :
Kong, Ning ; Milstein, Laurence B.
Author_Institution :
TRW ESD, Sunnyvale, CA, USA
fDate :
3/1/1999 12:00:00 AM
Abstract :
The average signal-to-noise ratio (SNR) of a generalized selection combining scheme, in which the m diversity branches (m/spl les/L, where L is the total number of diversity branches available) with the largest instantaneous SNRs are selected and coherently combined, is derived. A Rayleigh fading channel is assumed, and a simple closed-form expression for the SNR is found which is upper bounded by the average SNR of maximal ratio combining, and lower bounded by average SNR of conventional selection combining.
Keywords :
Rayleigh channels; diversity reception; noise; Rayleigh fading channel; average SNR; closed-form expression; diversity branches; generalized diversity selection combining; instantaneous SNR; lower bound; maximal ratio combining; signal-to-noise ratio; upper bound; AWGN; Additive white noise; Closed-form solution; Density functional theory; Diversity reception; Fading; Gaussian noise; Random variables; Rayleigh channels; Signal to noise ratio;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.752901
